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Dart Machinery, LTD. stands behind each product we manufacture 100%. Each component undergoes a detailed manufacturing process that involves the hundreds of calculated and precision steps to ensure the finest quality possible.
PRO1 23 215cc Port

PRO1 23° 215cc

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Product Description

Serious street performance, modified oval track and bracket racing. Mid-range to 7,000 RPM. Best for 400+ cubic inch engines.

Dart PRO1 23° 215cc Platinum series heads are for big cubic inch, high RPM applications which favor peak power over low end flexibility.

Long wearing Bronze valve guides, screw-in studs, multi-angle intake seats with hardened, radiused exhaust seats are standard. Best of all, our precision cast ports produce outstanding airflow without time consuming porting.

Assemblies include Stainless Steel valves, premium springs, locks, retainers, studs, guide plates and seals.

Heads are sold individually.

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Material: RMR Cast Aluminum Alloy

Valve Angle: 23° (stock)

Intake Port Volume: 215cc

Intake Valve: 2.050”

Exhaust Valve: 1.600”

Chamber Volume: 64 or 72cc

Plug Types: Straight or angle

PRO1 23° 215cc – Aluminum (Straight Plug Heads)

64cc Combustion Chambers

11520020P – Bare Head

11521122P – 1.437” Dual Springs for Hydraulic Roller or Solid Flat Tappet Cam .620”

11521123P – 1.550” Dual Springs for Solid Roller Cam .660”


72cc Combustion Chambers

11620020P – Bare Head

11621122P – 1.437” Dual Springs for Hydraulic Roller or Solid Flat Tappet Cam .620”

11621123P – 1.550” Dual Springs for Solid Roller Cam .660”


PRO1 23° 215cc – Aluminum (Angle Plug Heads)

64cc Combustion Chambers

11510020P – Bare Head

11511122P – 1.437” Dual Springs for Hydraulic Roller or Solid Flat Tappet Cam .620”

11511123P – 1.550” Dual Springs for Solid Roller Cam .660”


72cc Combustion Chambers

11610020P – Bare Head

11611122P – 1.437” Dual Springs for Hydraulic Roller or Solid Flat Tappet Cam .620”

11611123P – 1.550” Dual Springs for Solid Roller Cam .660”

PRO1 215 Tech Sheet – H15

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